Jorge Cortés

Professor

Cymer Corporation Endowed Chair




Transient frequency control with regional cooperation for power networks
Y. Zhang, J. Cortés
Proceedings of the IEEE Conference on Decision and Control, Miami Beach, Florida, 2018, pp. 2587-2592


Abstract

This paper proposes a centralized and a distributed sub-optimal control strategy to maintain the real-time transient frequencies of a given collection of buses in safe regions, and simultaneous preserve asymptotic stability of the entire network. In a receding horizon fashion, the centralized control input is obtained by iteratively solving an open-loop optimization problem aiming to minimize the aggregate control efforts over sub-controllers regulated on individual buses under transient frequency and stability constraints. Due to the non-convexity nature of the optimization, we propose a convexification technique by identifying a reference control input trajectory. We then extend the centralized control to a distributed scheme, where each sub-controller can only access the state information within a local region. Simulations on IEEE-9 and IEEE-39 power networks illustrate our results.



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Mechanical and Aerospace Engineering, University of California, San Diego
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